Color

#2126ba

#2126ba
hex#2126ba
rgbrgb(33, 38, 186)
hslhsl(238, 70%, 43%)
oklchoklch(0.396 0.221 269.3)
Closest name: Galactic Highway (#3311bb)Relative luminance 0.0525

Colors that go with #2126ba

Charcoal, Blue and Cornflower Blue lead the list. Each partner is a real named colour with the reason it works — a wheel relationship, a neutral that carries it, or a pairing lifted from a palette or brand system that actually shipped — and every pair opens in the palette tool.

Tints & shades

Every swatch is its own page — click any to analyze it.

Harmonies

Complementary

Open in tool →

#bab521

#2173ba · #6921ba

#ba2126 · #26ba21

Split-complementary

Open in tool →

#ba6921 · #73ba21

#ba2173 · #bab521 · #21ba69

Contrast

#2126ba as textRatioAAAA largeAAAFix
Aaon white
10.24:1passpasspassPasses AAA — no fix needed.
Aaon black
2.05:1failfailfail
  • AA: use #6367e3 as the text (4.58:1)
  • AAA: use #8a8dea as the text (7.08:1)
  • AA: or shift the background to #adadad (4.56:1)
  • AAA: or shift the background to #d6d6d6 (7.04:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #2126ba as the background.

Brands using this color

No public brand in the corpus uses this exact color yet. Extract a brand to add one.

Fonts for this mood

#2126ba reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #2126ba
live endpoint

Point any MCP client at the shared colors endpoint and your agent gets the same engine as this page — direct_palette, edit_direction, check_palette, check_contrast — read-only, no key. Every direction it proposes comes with a /colors/d/… link: open it, lock what you like, paste the link back, and the agent edits rather than re-rolls.

endpointhttps://mcp.brandsweets.com/colors/mcp
claude mcp add --transport http brandsweets-colors https://mcp.brandsweets.com/colors/mcp
try this prompt

analyze #2126ba and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/2126ba-9f9cc4-df944e-251f2d-e9edf1?lock=0&style=vibrant

Want the agent to remember your picks and write them into a living brand? Create a free BrandSweets workspace.

Machine-readable: color.md